EP2345544A1 - Valve marker with transit channel in the valve seat - Google Patents

Abstract

The device has a receiving housing (10) with a receiving space (11) for the medium, where the receiving space has an intermediate wall (20) with clearance hole (21). A passage channel (20k) is arranged in a seat (23) that is arranged in the area of the clearance hole. The passage channel allows a replacement of air or medium between storage space (11v) and working space in closure- or mixing body (22). The closure- or mixing body is supported on the seat. The replacement takes place by the passage channel.

Description

The present invention relates to devices for writing, marking and / or painting with a liquid medium, in particular devices for applying highly pigmented inks, referred to in practice as valve markers.

It is assumed that a prior art, which are devices for writing, painting or marking. They have a receiving housing, with a receiving space for the medium. The receiving space has an intermediate wall with a through hole, which divides the receiving space into a storage space and a working space. At least one closure and / or mixing body, which cooperates with a seat formed in the region of the through-hole, can be arranged in the storage space. Alternatively or additionally, a closure and / or mixing body can be arranged in the working space, which cooperates with a seat formed in the region of the through-hole. In the working space, a valve device is arranged, which comprises a valve housing with a valve seat and a valve closure body acted upon by a return spring
having. The valve closure body is movably mounted in the valve housing cooperating with the valve seat. It is provided a writing tip, which is connectable to the working space.

In the DE 297 22 317 U1 is such a writing instrument described. In this known writing instrument, a sponge is arranged as a buffer between the valve device and the writing tip. The valve closure member is designed as a piston, which is guided displaceably in the valve housing and thereby largely fills the entire cross-section of the valve housing. In the valve housing remain relatively narrow angled annular spaces that receive the return spring and the medium. The inflow opening of the valve housing can be closed by a ball. This ball forms a closure and / or mixing body. It lies in the writing position, in which the writing tip is directed downwards, in each case in the inflow opening and closes it. In order to allow an inflow of medium into the valve housing, the writing instrument must be shaken, so that the ball comes out of its blocking position from the inlet opening. During the shaking movement, the ball simultaneously acts as a mixing body for the medium in the receiving space outside the valve housing. The disadvantage is that in each case a shaking movement is required to move the ball from the flow hole, so that an inflow of ink into the working space is made possible. This interferes with handling when working with the writing instrument for a long time.

In the US 2004/0240925 A1 is another described as a valve marker writing instrument described which is intended in particular for writing with colored ink. In the writing instrument shown in Fig. 11 in this document, the binder and the dye are stored in separate spaces, which are separated in the non-use position of the writing instrument via a closed valve means to prevent mixing of binder and dye. During writing, the valve device is opened so that a mixture of binder and dye takes place in the region above the writing tip. The user can then write with colored ink. In this valve marker no intermediate wall with through hole for a subdivision into a reservoir and a working space is provided in the receiving space. In particular, no closure and / or mixing body is provided which has a seat in the region of a through-hole having. The receiving space is in the embodiment in US 2004/0240925 A1 is separated exclusively by the valve seat of the valve housing and is actuated by the designed as a ram valve closure body so that the valve seat is open when writing. The open position of the valve in the writing position is required to realize the mixture of the dye with the binder, which must be due to the separate arrangement of binder and dye for writing.

Also in the US 2003/0099501 A1 is described as a valve marker writing instrument described. The ink is stored in two separate rooms, in a storage room and in a working space, which are separated by an intermediate wall with a through hole. The separation takes place in that the ink is held in the area of the through hole in the storage space due to its surface tension. The separation can be canceled by engaging the plunger of the valve closure member by pushing the writing tip into the through hole so far that the liquid surface is pierced and the ink in the upper portion of the working space formed between the intermediate wall and the valve seat, passes. In the lower working space, which is formed between the valve seat and the writing tip, a memory is formed with an ink absorption body, via which the writing tip is supplied with ink. By pushing in the writing tip, the valve seat is opened to supply the ink to the lower working space. During writing, the valve device is closed, so that only the ink present in the lower working space in the ink absorption body is available during writing. In this known construction no closure and / or mixing body is provided in the storage space or in the working space, which cooperates with a seat in the region of the through hole of the intermediate wall. The closure of the through hole in the intermediate wall is realized in this known construction exclusively by the surface tension of the medium received in the storage space. In order to allow passage from the storage space into the working space, it is necessary in this known construction, with the end of the plunger through reaching through the through-hole and piercing the liquid surface.

The present invention has for its object to provide a valve marker, which is ensured in a structurally simple manner that the ink flow from the storage space in the working space is made possible even with prolonged use without frequent shaking.

The essence of this solution is that in the arranged in the region of the through-hole seat at least one passageway is formed, which also in lying on the seat closure and / or mixing body through the passageway permitting replacement of air and / or medium between the storage room and the working space. The formed in the seat of the closure and mixing body at least one passage channel allows a passage between the reservoir and the working space, even if the closure and / or mixing body rests on the seat and covers the through hole. The closure and / or mixing body may be formed in preferred embodiments as a ball. The seat in the region of the through hole may be formed so that the resting on the seat closure and / or mixing body completely covers the Durchgangsloch. It is essential that the at least one through-channel is formed in the seat such that even in this position of the closure and / or mixing body of the passage allows passage between the reservoir and working space, so that an exchange of air and / or medium between these spaces is guaranteed. This means that the closure and / or mixing body can indeed cover the through-channel in its resting on the seat position, but not completely locks. The exchange of air and / or medium between the pantry and work space is required for the handling of the writing instrument. If the medium from the storage room to flow into the work space, a pressure equalization must preferably be done in the manner of aeration. This can be done in the present case by the at least one through-channel. In addition, however, other conventional ventilation and Pressure compensation devices be present. Embodiments are provided in which the at least one through-channel acts primarily or exclusively as an inflow channel for the medium from the storage space into the working space. In preferred embodiments, however, it is provided that the at least one through-channel serves both for the ventilation and for the inflow of the medium.

In particularly preferred embodiments, it is provided that a plurality of passage channels are provided, preferably distributed over the circumference of the seat around the through hole. With the plurality of through channels, a particularly reliable exchange of air and / or medium between the storage room and working space can be realized. The uniform distribution over the circumference of the seat contributes to this particularly advantageous.

In order to achieve a particularly good functionality, it can be provided that the closure and / or mixing body interacts with the at least one through-channel or the plurality of through-channels in such a way that when the closure and / or mixing body is seated on the seat, the passage cross-section of the through-channel or the passageways is only reduced. This reduction of the passage cross-section is effected in that the closure and / or mixing body engages in the passage cross-section, without completely blocking it. This can preferably be realized in that the at least one through-channel is formed as an upwardly open in the seat of the seat groove. If the closure and / or mixing body is formed as a ball, the reduction of the groove cross-section takes place in the periphery of the dipping into the groove ball segment.

This means that the groove is at least partially covered by the closure and / or mixing body when it rests on the seat.

Advantageous embodiments result in special designs of the seat. It is possible that the seat is formed on an outer surface of a substantially annular body which is inserted into the through hole and that the at least one passageway is formed in this body. Furthermore, it is possible for the seat to have a substantially conical and / or stepped seat surface and for the at least one through-channel or pass-through channels in the seat surface to be directed radially to the through-hole.

In preferred embodiments can be provided that the valve closure body is designed as a ram. The plunger may engage with its end remote from the valve seat in the through hole of the intermediate wall and / or cross-through the through hole of the intermediate wall and thereby formed cooperating with the closure and / or mixing body.

In preferred embodiments it is provided that in the region of the through hole formed in the intermediate wall a closure element, e.g. Film or film skin is fixed substance and or positively, wherein the closure element is moved away by the remote from the valve seat end of the plunger by moving the plunger before the first use of the device and / or destructible. Preferably, the closure element is designed as a film skin which can be pierced by the end of the tappet. In preferred embodiments, the film skin is arranged on the working space facing side of the intermediate wall and preferably also fixed there.

In preferred embodiments, the writing tip is mounted relative to the receiving housing and retractable under actuation of the valve body such that the writing tip extended in the non-use position and the valve device is closed, and that the writing tip retracted in writing position and the valve device is open. By moving the writing tip of the plunger can be moved. The plunger can be one with the valve seat having cooperating valve closure portion. In preferred embodiments, it is provided that the plunger has a guide portion which engages in the guide hole of the valve housing. The plunger may have a cooperating with the guide hole stop portion.

It can further be provided that the plunger has a spring receiving portion for receiving the concentrically arranged return spring, which is supported on the valve housing or on the intermediate wall of the receiving space. In particularly preferred embodiments, it is provided that the closing body actuated by the writing tip forms with an inner wall of the valve housing a passage which, in the manner of a metering valve, is variably permeable depending on the position of the valve closure body. The inner wall of the valve housing may be conical and / or stepped and / or the outer wall of the valve closure body may be conical and / or stepped.

The invention will be explained in more detail below with reference to figures.

Fig. 1

eine Schnittdarstellung eines ersten Ausführungsbeispiels eines erfindungsgemäßes Schreibgerät in der Nichtgebrauchsstellung,

Fig. 2

eine Fig. 1 entsprechende Schnittdarstellung des Ausführungsbeispiels in Fig. 1, jedoch in der Nachfüllstellung,

Fig. 3

eine Fig. 1 entsprechende Schnittdarstellung eines zweiten Ausführungsbeispiels eines erfindungsgemäßen Schreibgeräts in der Nichtgebrauchsstellung.

Fig. 4

eine Fig. 1 entsprechende Schnittdarstellung eines dritten Ausführungsbeispiels eines erfindungsgemäßen Schreibgeräts in der Nichtgebrauchsstellung.

Show it

Fig. 1

a sectional view of a first embodiment of a writing instrument according to the invention in the non-use position,

Fig. 2

a Fig. 1 corresponding sectional view of the embodiment in Fig. 1 , but in the refill position,

Fig. 3

a Fig. 1 corresponding sectional view of a second embodiment of a writing instrument according to the invention in the non-use position.

Fig. 4

a Fig. 1 corresponding sectional view of a third embodiment of a writing instrument according to the invention in the non-use position.

The writing instrument is formed in the embodiments shown in the figures as a substantially cylinder pin-shaped valve markers.

First, this is now in the FIGS. 1 and 2 illustrated embodiment described. The exemplary embodiment has a cylindrical receiving housing 10 with a receiving space 11 for the medium. In the receiving space 11, an intermediate wall 20 is arranged, which divides the receiving space 11 into a storage space 11 v and a working space 11 a. In the working space 11 a, a valve device 30 is arranged. This consists of a front valve housing 31 and a rear valve housing 32. In the valve housing, a valve closure body 33 is slidably mounted, which is formed in the illustrated case as a plunger. In the valve housing, a return spring 34 is also mounted, which acts on the valve closure body 33 in its closed position to the valve seat 30s out. At the front end of the receiving housing 10, a writing tip 40 is slidably mounted.

The medium to be applied is filled in the receiving space 11 of the receiving housing 10. The medium in preferred embodiments is a binder in which heavy color pigments are suspended. The receiving housing 10 is closed at the rear end and provided at the front end with a sleeve 12, through the front opening of the writing tip 40 is retracted and extended.

The front valve housing 31 is inserted into the rear valve housing 32 and thereby latched over a not shown in the insertion area on the front valve housing 31 annular bead. This composed of the front valve housing 31 and the rear valve housing 32 housing is kept inserted into the receiving housing 10 via press fit. The sleeve 12 is screwed onto the front end of the exception housing 10 on an external thread, not shown. In modified embodiments can be provided that the sleeve 12 is fixed by pressing or by a snap connection on the receiving housing. The sleeve 12 engages over while the writing tip 40, which is inserted in the front leading end 31f of the front valve housing 31, is out of the sleeve 12 and retractable. The calibrated annular gap 3fs formed in the front leading end 31f of the front valve housing 31 for guiding the writing tip 40 will be described later in detail.

In the front valve housing 31, the valve seat 30s is formed. It is designed as a conically tapered annular inner edge of the end facing away from the writing tip 40 of the front valve housing 31. The valve closure body 33 designed as a plunger has a thickened valve closure section 33v. The valve closure portion 33v engages in the Fig. 1 shown closure position of the valve 30 with its the valve seat 30s facing the end in the valve seat 30s a. The valve closure portion 33v has a conical valve closure surface 33k located in the in Fig. 1 shown closed position on the conically tapered inner edge of the valve seat 30s tightly seated and closes the valve seat 31s.

The valve closure portion 33v has at its side remote from the valve seat 30s region a cylindrical portion 33z with an annular edge 33r, which forms a metering gap with a conical inner wall 32i of the rear valve housing 32, when the plunger 33 with open valve opposite to the representation in Fig. 1 is shifted upwards. This shift takes place in the writing position by appropriate pressure on the writing tip 40. The writing tip 40 is with your engaging in the front valve housing 31 end respectively in contact with the end facing the plunger 33. The plunger 33 is on the return spring 34 in the valve closing direction applied. The return spring 34 is arranged coaxially on a spring receiving portion of the plunger 33. It is supported with its one end on an annular collar of the plunger 33 and with its other end at the inner end of the rear valve housing 32.

The rear valve housing 32 is formed substantially in the manner of a conical basket, which tapers towards the rear end. In this rear end, a central through hole 32 f is formed, through which the rear free end 33 f of the plunger 33 engages. The rear end 33f is thus a leading end of the plunger 33. In the front region of the inner wall of the basket-shaped housing 32, the conical inner wall 32i is formed with the annular edge 33r of the cylindrical valve closure portion 33z of the plunger 33 forms the metering gap. Following the conical wall 32i to the rear 32 longitudinal slots 32s are formed in the wall of the housing, which extend axially distributed over the circumference of the rear wall.

The rear guide end 33f of the plunger 33 engaging through the guide hole 32f has, in the embodiment in FIG Fig. 1 a cross-shaped cross-section (not shown). The free end 33f of the plunger engages in the position in Fig. 2 with the cross-shaped or star-shaped cross-section in the through hole 21 of the intermediate wall 20 a. The guide hole 32f is circular in cross section, wherein the diameter of the guide hole corresponds to the diameter of the cross or star-shaped cross section, that is, the diameter of the guide hole 32f is slightly larger than this diameter of the plunger, ie the sweeping ram end 33f, so that the plunger 33rd in the guide hole 32f is displaced accordingly. When the ram end 33f engages and slides in the guide hole 32f, flow channels remain between the radial portions of the cross or star section and the wall of the guide hole. The mixing and closing ball 22 arranged on the ball seat 23 is lifted by the penetrating ram end 33 f, so that in the position in FIG Fig. 2 a flow of the medium from the storage space 11v to the working space 11a is released. This makes it possible to specifically refill the working space 11a with medium. This refill position is achieved when the writing tip 40, as in FIG. 2 shown, completely retracted into the sleeve 12 and the plunger 33 is moved maximum far to the rear. In this position, the return spring 34 is maximally compressed. This way set refilling position remains as long as the writing tip 40 is held by pressure from the outside in the retracted position. Once the pressure is released, takes place via the return spring 34, the provision in the in FIG. 1 illustrated non-submitter position.

In the non-use position and in the normal position during writing, one of the mixing and closing balls 22 arranged in the storage space 11 v lies on the through-hole 21 of the intermediate wall 20, as shown in FIG Fig. 1 is shown. In the support area, a ball seat 23 is formed in the intermediate wall 20 in an annular step of the through-hole 21 facing the storage space 11v. The ball seat 23 is formed as a substantially annular body which is inserted into the annular step of the through hole 21. The body has a conical surface as a bearing surface for the mixing and closing ball 22. In the conical bearing surface a plurality of groove-shaped radially extending channels 20k are uniformly distributed over the circumference of the support surface, preferably distributed in a star shape. The groove-shaped channels 20k are preferably U-shaped or V-shaped in cross-section. When the mixing and closing ball 22 rests on the conical bearing surface, these channels 20k are open towards the top, both in the rear section, which faces the storage compartment 11v, and in a front section, which is directed towards the through hole 23, and covered only in a central portion of the ball 22, but not shut off. The channels 20k are therefore not closed even when the ball is resting, but open with a reduced passage. The channel cross section of the channels 20k relative to the ball diameter is designed in each case depending on the medium provided for use, so that even with resting ball 22 a certain passage of the medium of certain viscosity is made possible and also each a ventilation of the reservoir 11v is guaranteed. Ventilation is required when fluid flows from the reservoir 11v into the working space 11a.

If the device is held down for a long time with the writing tip 40, for example during prolonged writing operation or when stored appropriately, it happens that the color pigments in the storage space 11v in the region of Put through channels 20k. The passageways 20k clog more or less and eventually close completely. This means that no medium from the storage room 11v can flow into the working space 11a more and ventilation in the pantry 11v is no longer possible. The writing tip 40 is then no longer supplied with the medium. An undesired outflow of the medium is prevented. But a letter is no longer possible due to lack of supply of writing tip 40 with medium. The user is forced to shake the device to resume writing. With shaking, the medium is mixed in the storage space 11v and, if present, the medium in the working space 11a. At the same time, the sedimentation in the through-channels 20k is remedied and again a writable mixed state of the medium is produced. The now writable medium can again flow from the storage space 11v into the working space 11a and is available at the writing tip 40.

In the in the FIGS. 1 and 2 illustrated embodiment, a second mixing and closing ball 22 is disposed in the storage space 11v, which rests in the usual writing posture - ie when the writing tip 40 in the vertical direction down - rests on the top of the resting on the valve seat 23 ball 22. When the valve marker is shaken, the two balls 22 in the reservoir 11v lift off from the intermediate wall 20. They are moved back and forth in the storage room 11v while shaking. The ball seat 23 of the through hole 21 is thus released, so that the medium from the storage space 11 v can pass into the working space 11 a.

Instead of the in the embodiment in the FIGS. 1 and 2 used intermediate wall 20, which has only one zugewanden to the reservoir ball seat 23, in an alternative embodiment, an intermediate wall 20 may be used, in which also in the region of the through hole 21 on the working space 11 a side facing a ball seat 23 is formed. That is, the intermediate wall 20 is then formed as a symmetrical to its center plane body and there are two ball seats provided in the through hole 21, namely a first ball seat 23, which faces the storage space and a second ball seat 23, which faces the working space. Due to the then mirror-symmetrical design of the intermediate wall 20, there are assembly advantages, since the intermediate wall in this case has no predetermined installation direction, but also rotated by 180 ° in the receiving space can be mounted.

Like from the FIGS. 1 and 2 As can be seen, the writing tip 40 is in the front end of the sleeve 12 off and inserted. It is guided by the front sleeve-shaped guide end 31 f of the front valve housing 31. This guide of the writing tip 40 in the front valve housing 31 is carried out to form a calibrated annular cross-section guide slot 31 fs. The annular guide slot 31fs in the sleeve-shaped guide end 31f has an axial length which corresponds to approximately one third of the axial length of the writing tip 40 formed as a cylinder body. The calibration is performed in such a way that the inside width of this annular slit 31fs permits a ventilation of the receiving space 11, but a flowing exit of the medium does not take place through the annular guide slit 31fs. The outer wall of the guide pin 40 is only wetted by the medium. The writing tip 40 is formed of porous material. It is supplied with the medium by the medium from the working chamber 11 a, ie from the front end of the valve housing, capillary in the writing tip 40 progresses to the free end of the writing tip 40. About the calibrated guide slot, the outside of the writing tip 40 with the Medium so just wetted. The bulk of the media is provided at the writing tip 40 via the capillary mass transport through the porous writing tip.

• In der Nichtgebrauchsstellung ist das Ventil 30 geschlossen, wie in Figur 1 dargestellt. Der Stössel 33 steht mit der konischen Ventilverschlussfläche 33k des Ventilverschlussabschnittes 33v auf dem komplementären Ventilsitz 30s in Auflage unter Beaufschlagung durch die Rückstellfeder 34. Die Schreibspitze 40 ist hierbei in ihrer ausgefahrenen Position.

The valve marker according to the invention works as follows:

• In the non-use position, the valve 30 is closed, as in FIG. 1 shown. The plunger 33 is in contact with the conical valve closure surface 33k of the valve closure portion 33v on the complementary valve seat 30s under the action of the return spring 34. The writing tip 40 is here in its extended position.

In order to bring the valve marker into writing position, pressure must be exerted on the writing tip 40. The writing tip 40 is inserted more or less far and lifted the plunger 33 with its valve closure portion 33v against the action of the return spring 34 from the valve seat 30s. The valve thus comes in the open position. The medium can now flow through the valve seat 30s through to the writing tip 40 and supply them for writing with medium. In the writing position via the valve 30 an individually adjustable dosage of the medium by the rear metering edge 33r of the cylindrical closure portion 33z of the plunger 33 with the inner wall 32i of the rear valve housing 32 cooperates to form an annular metering gap whose inside diameter depends on the sliding position of the Valve tappet 33 is adjustable. The further the writing tip 40 is retracted, the more the dosing edge is displaced towards the conical inner wall 32i and the clear width of the dosing gap is narrowed. The flow rate of the medium to the writing tip 40 can thus be varied by moving the writing tip 40 during writing and adjusted variably. This makes it possible to vary the amount of medium discharge during writing by corresponding pressure on the writing tip 40. The variably adjustable metering gap in the rear valve housing 32, the medium flows through the slots formed in the rear valve housing 32s.

In the embodiment of the FIGS. 1 and 2 Refill medium from the reservoir 11v in the working space 11a, is provided primarily that the device is shaken in an up and down movement. Alternatively, the refilling can also take place in that the writing tip 40 is fully retracted into the sleeve 12, in the position as in FIG. 2 is shown. In this case, the rear free end 33f of the plunger 33 engages in the through hole 21 and lifts the resting on the ball seat 23 ball 22 so that medium can flow through the through hole 21 unhindered from the storage space 11v. Due to the cross-shaped or star-shaped cross section of the plunger 33, a sufficient flow is ensured.

The first commissioning takes place in the same way as in FIG. 2 Refill shown, ie the writing tip 40 is fully retracted, so that the plunger end engages in the through hole 21 of the intermediate wall 20 and the closure and mixing balls 22 lifts. Upon engagement of the plunger end in the through hole 21, a film skin 20fh formed there before the initial startup is pierced. The film skin 20fh is in FIG. 1 recognizable. It is arranged on the working space 11 a facing the mouth of the through hole 21. The film skin 20fh can also be arranged within the through hole 21 in a modified embodiment. In the illustrated case, the film skin 20fh is formed in the intersection of the through-hole 21 with a plane parallel to the central median plane of the intermediate wall below the ball seat. In a modified embodiment but can also be provided that the film skin is formed in the region of the ball seat 23, preferably as a unit with the ball seat 23 in the region of the narrowest cross section of the ball seat 23, ie in the mouth region of the ball seat, where the through hole of the ball seat in that Through hole 21 of the intermediate wall 20 opens. Alternatively, the film skin 20fh may be disposed within the through hole 21 of the intermediate wall 20. It is also possible to arrange a plurality of film skins 20fh in parallel planes. In any case, preferably only the storage space 11v is filled with medium before the initial start-up. The film skin 21fh tightly seals the storage space 11 prior to initial startup.

In embodiments with film skin formed inside the through hole 21 or within the through hole of the ball seat, the film skin is protected from unintentional damage prior to initial startup.

Preferably, the receiving housing 10 has one or more transparent areas, which allow the user an insight into the storage space 11v and / or the working space 11a. This allows the user to check whether the device has already been used, ie whether the working space 11a is already filled with the medium. In addition, the user can tell if after a long time Disposal of the device has a deposition of the color pigments, ie a separation of color pigments and binder has taken place. In the area of the working space 11 a, the receiving housing 10 is preferably completely transparent. In the area of the storage space 11v, the receiving housing 10 is provided with two opposing slot-shaped transparent areas. The slots can have a scaling, so that the current amount in the storage room is readable.

At the opposite slit-shaped transparent areas, the user can also recognize whether the medium in the storage space 11v is in a writable state. If the device is stored for long periods in non-use position, the color pigments settle on one side in the storage room. Incident light is then absorbed to varying degrees in the slot-shaped transparent areas. The medium, seen through the two slit-shaped transparent areas, then appears differently colored to the viewer. To produce a uniform mixing, the user can then shake the device until the color pigments are stirred up and again evenly distributed in the binder. He can observe this mixing process and the state of mixing through the transparent slots. As soon as the uniform mixing is achieved, the medium appears as the same color in the two slit-shaped transparent areas.

In the second embodiment in FIG. 3 it is a modified embodiment, which is compared to the embodiment in the FIGS. 1 and 2 only differs in that in addition a mixing and closure ball 22 is also arranged in the working space 11a and that in the intermediate wall 20 in the region of the through hole 21 corresponding to the work space 11a side facing a ball seat 23 is formed. Said additional mixing and / or closing ball 22 is in FIG. 3 disposed in the rear portion of the working space 11 a between the rear valve housing 32 and the intermediate wall 20. With this modified so far Embodiment is in an overhead position of the valve marker, that is, when the valve flag is held in the writing position so that the free end of the writing tip 40 in the vertical direction facing upward, prevents the medium from the working space 11a flows back into the reservoir 11v. This prevention of the backflow is realized in that in the overhead position the ball located in the working space 11a 22 rests on the ball seat 23 of the through hole 21.

Instead of a freely movable mixing and closing ball 22 in the working space 11 a can be provided that a cage is arranged on the intermediate wall 20 in the working space 11 a. This cage has at its front end an opening through which the rear end of the plunger 33 can be inserted. In this cage there is a sealing body, which is movably guided within the cage in up and Abrichtung. This sealing body has a tappet-shaped end which can engage in the through hole 21 of the intermediate wall 20.

When first commissioning of the sealing body is pushed within the cage by engaging the rear end of the plunger 33 to the rear, so that the sealing body with its plunger pierces the through-hole 21 there formed before the initial operation film skin 20fh.

Otherwise, the sealing body in the cage fulfills the same function as the freely movable mixing and closing ball 22 in the working space 11a; i.e. the sealing body in the cage prevents backflow of the medium from the working space 11a into the storage space 11v when the device is held in an overhead position. The cage serves only to ensure the position and orientation of the pestle-shaped end of the sealing body with respect to the through hole.

As an alternative to this cage device attached to the intermediate wall 20, a mixing body formed of grid material or other permeable material may also be arranged in piston-like manner in the working space 11a. In preferred embodiments, this mixing body in its center the Through hole of the intermediate wall facing a complementary with the through hole sealing body. When the mixing body is moved up and down in the working space by shaking in the manner of a piston, the permeable grating material of the mixing body causes a flow and thereby a mixing of the medium in the working space 11a. In the overhead position, the closure body attached to the mixing body at the center engages the through hole 21 of the intermediate wall 20 and closes the through hole 21 so that the medium can not flow back from the working space 11a into the reservoir 11v.

The closure body may additionally have a tip at its free end in order to pierce a film skin 20fh closing the through-hole 21 during initial startup. This can be done by the user in that the writing tip 40 is fully retracted and is moved with the plunger end of the valve closure body of the piston-shaped mixing body to the rear wall to the intermediate wall. In this case, the closure body engages with its pointed end in the through hole 21 and pierces the film skin 20fh.

In the embodiment in FIG. 4 it is another variation. The difference compared to the embodiment of FIGS. 1 and 2 is that in FIG. 4 the valve seat 30s is not disposed at the rear end of the front valve housing 31 but at the rear end of the rear valve housing 32 and the conical valve closure surface 33k is formed at a valve closure portion 33v separate from the cylindrical closure portion 33z. This separate valve closure portion 33v is formed at the rear end of the plunger 33 as a thickened portion of the leading end of the plunger 33 protruding from the guide hole 32f of the rear end of the valve housing 32. The valve seat 30s is at the rear end end of the rear valve housing 32 in the region of Guide hole 32 f formed, on the intermediate wall 20 side facing.

In FIG. 4 is the valve seat 30s closed with the valve closure surface 33k closed. The plunger 33 is moved under the action of the return spring 34 to the front in a position in which the writing tip 40 is extended from the sleeve 12. In the writing position, not shown, the writing tip 40 by corresponding contact pressure against the action of the return spring 34 with respect to the position in FIG. 4 moved backwards, whereby the closure body 33v lifts off the valve seat 30s and the valve is open. The metering function of the valve via the metering edge 33r of the cylindrical portion 33z to form the Dosierringspalts with the conical inner edge 32i in the same manner as in the embodiments in the FIGS. 1 and 2 , For this purpose, the valve housing is also in FIG. 4 composed of a front valve housing 31 and a rear valve housing 32. The rear valve housing 32 also has a conical inner wall 32i which cooperates for metering the medium with the metering edge of the cylindrical portion 32z. The rear valve housing 32 has, in contrast to the embodiment of FIGS. 1 and 2 but no slots 32s, but a closed wall. In contrast to the embodiment of the FIGS. 1 and 2 takes place in the embodiment in FIG. 4 only with open valve seat 30s in the valve housing an inflow of medium.

Another difference over the embodiment of the FIGS. 1 and 2 is that in FIG. 4 on the valve closure portion of the plunger 33, which cooperates with the valve seat 30s, a mixing device 33m is arranged. It is designed in the manner of a spoked wheel. The cylindrical body of the valve closure portion effectively forms the hub which carries the spoked wheel rigidly attached. The outer diameter of the spoked wheel is slightly smaller than the inner diameter of the cylindrical working space 11a. When the valve stem 33 is axially displaced between the closed position in which the valve seat 30s is closed and the refilling position in which the free end engages the through hole 21 of the intermediate wall 20, the spoked wheel 33 is moved with mixing of the medium in the working space 11a.

• dass in dem im Bereich des Durchgangsloches 21 angeordneten Sitz 23 mindestens ein Durchgangskanal 20k angeordnet ist, der auch bei auf dem Sitz 23 aufliegendem Verschluss- und/oder Mischkörper 22 einen durch den Durchgangskanal 20k hindurch erfolgenden Austausch von Luft und/oder Medium zwischen Vorratsraum 11v und Arbeitsraum 11a zulässt;
• dass der Verschluss- und/oder Mischkörper 22 mit dem mindestens einem Durchgangskanal 20k derart zusammenwirkt, dass bei auf dem Sitz 23 aufliegenden Verschluss- und/oder Mischkörper 22 der Austausch von Luft und/oder Medium reduziert ist;
• dass der mindestens eine Durchgangskanal 20k als eine in der Sitzfläche des Sitzes 23 nach oben hin offene Nut ausgebildet ist;
• dass die Nut durch den Verschluss- und/oder Mischkörper 22, wenn er auf dem Sitz 23 aufliegt, zumindest abschnittsweise überdeckt ist;
• dass mehrere Durchgangskanäle 20k über den Umfang des Sitzes 23 um das Durchgangsloch 21 verteilt angeordnet sind;
• dass der Sitz 23 an einer Außenfläche eines im wesentlichen ringförmigen Körpers ausgebildet ist, der in das Durchgangsloch 21 eingesetzt ist und dass der mindestens eine Durchgangskanal 20k in diesem Körper ausgebildet ist;
• dass der Sitz 23 eine im wesentlichen konische und/oder stufige Sitzfläche aufweist und der mindestens eine Durchgangskanal 20k bzw. die Durchgangskanäle 20k in der Sitzfläche radial zu dem Durchgangsloch 21 gerichtet ist bzw. sind;
• dass der Ventilverschlusskörper 33 als Stössel ausgebildet ist;
• dass der Stössel 33 mit seinem vom Ventilsitz 23 entfernten Ende 33f in das Durchgangsloch 21 der Zwischenwand 20 eingreift und/oder durch das Durchgangsloch 21 der Zwischenwand (20) hindurchgreifend und dabei mit dem Verschluss- und/oder Mischkörper 22 zuwammenwirkend ausgebildet ist;
• dass im Bereich des in der Zwischenwand 20 ausgebildeten Durchgangslochs 21 ein Verschlusselement 20fh vorgesehen ist, das durch den vom Ventilsitz 30s entfernten Ende des Stössels 33 durch Verschieben des Stössels 33 vor dem ersten Gebrauch des Gerätes wegbewegbar und/oder zerstörbar ist;
• dass das Verschlusselement als eine von dem Ende des Stössels 33 durchstoßbare Filmhaut 20fh ausgebildet ist;
• dass die Filmhaut 20fh an der dem Arbeitsraum 11a zugewandten Seite der Zwischenwand 20 angeordnet ist;
• dass der Stössel 33 einen mit dem Ventilsitz 30s zusammenwirkenden Verschlussabschnitt aufweist;
• dass der Stössel 33 einen Führungsabschnitt 33f aufweist, der in dem Führungsloch 32f des Ventilgehäuses 32 eingreift;
• dass der Stössel 33 einen mit dem Führungsloch 32f zusammenwirkenden Anschlagabschnitt aufweist;
• dass der Stössel 33 einen Federaufnahmeabschnitt zur Aufnahme der konzentrisch angeordneten Rückstellfeder 34 aufweist, die an dem Ventilgehäuse 32 oder an der Zwischenwand 20 des Aufnahmeraums 11 abgestützt ist;
• dass der von der Schreibspitze 40 betätigte Verschlusskörper 33 mit einer Innenwandung 32i des Ventilgehäuses 32 einen Durchlass bildet, der abhängig von der Stellung des Ventilverschlusskörpers 33, 33r variabel durchlässig ist;
• dass die Innenwandung 32i des Ventilgehäuses 32 konisch und/oder stufig ausgebildet ist und/oder die Außenwandung des Ventilverschlusskörpers 33, 33r konisch und/oder stufig ausgebildet ist;
• dass im Bereich des in der Zwischenwand 20 ausgebildeten Durchgangslochs 21 ein Verschlusselement 20fh angeordnet ist, das durch den vom Ventilsitz 30s entfernten Ende des Stössels 33 durch Verschieben des Stössels 33 vor dem ersten Gebrauch des Gerätes wegbewegbar und/oder zerstörbar ist;
• dass das Verschlusselement als eine von dem Ende des Stössels 33 durchstoßbare Filmhaut 20fh ausgebildet ist;
• dass die Filmhaut 20fh an der dem Arbeitsraum 11 a zugewandten Seite der Zwischenwand 20 angeordnet ist;
• dass das Durchgangsloch 21 in der Zwischenwand 20 zentrisch angeordnet ist;
• dass vor der ersten Inbetriebnahme des Geräts ausschießlich in dem Vorratsraum 11v Medium angeordnet ist und in dem Arbeitsraum 11a vor der ersten Inbetriebnahme des Geräts kein Medium aufgenommen ist;
• dass in dem Vorratsraum 11v ein Verschluss- und/oder Mischkörper 22 angeordnet ist, der einem in dem Durchgangsloch 21 angeordneten Sitz 23 zugeordnet ist, und
• dass der als Stössel 33 ausgebildete Ventilverschlusskörper in einer Endstellung das Durchgangsloch 21 durchgreifend und mit dem Verschluss- und/oder Mischkörper 22 zusammenwirkend ausgebildet ist;
• dass in der Zwischenwand 20 im Bereich des Durchgangslochs 21 ein Sitz 23 für einen im Aufnahmeraum 11 angeordneten Verschluss- und/oder Mischkörper 22 ausgebildet ist, und in dem Sitz 23 mindestens ein Durchgangskanal 20k angeordnet ist, der auch bei auf dem Sitz 23 aufliegendem Verschluss- und/oder Mischkörper 22 einen durch den Durchgangskanal 20k hindurch erfolgenden Austausch von Luft und/oder Medium zwischen Vorratsraum 11v und Arbeitsraum 11a zulässt;
• dass der Verschluss- und/oder Mischkörper 22 mit dem mindestens einem Durchgangskanal 20k derart zusammenwirkt, dass bei auf dem Sitz 23 aufliegenden Verschluss- und/oder Mischkörper 22 der Austausch von Luft und/oder Medium reduziert ist;
• dass der mindestens eine Durchgangskanal 20k als eine in der Sitzfläche des Sitzes 23 nach oben hin offene Nut ausgebildet ist;
• dass die Nut durch den Verschluss- und/oder Mischkörper 22, wenn er auf dem Sitz 23 aufliegt, zumindest abschnittsweise überdeckt ist;
• dass mehrere Durchgangskanäle 20k über den Umfang des Sitzes 23 um das Durchgangsloch 21 verteilt angeordnet sind;
• dass der Sitz 23 an einer Außenfläche eines im wesentlichen ringförmigen Körpers ausgebildet ist, der in das Durchgangsloch 21 eingesetzt ist und dass der mindestens eine Durchgangskanal 20k in diesem Körper ausgebildet ist;
• dass der Sitz 23 eine im wesentlichen konische und/oder stufige Sitzfläche aufweist und der mindestens eine Durchgangskanal 20k bzw. die Durchgangskanäle 20k in der Sitzfläche radial zu dem Durchgangsloch 21 gerichtet ist bzw. sind;
• dass der Stössel 33 einen mit dem Ventilsitz 30s zusammenwirkenden Verschlussabschnitt 33v aufweist;
• dass der Stössel 33 einen Führungsabschnitt 33f aufweist, der in einem Führungsloch 32f des Ventilgehäuses 32 eingreift;
• dass der Stössel 33 einen mit dem Führungsloch 32f zusammenwirkenden Anschlagabschnitt aufweist;
• dass der Stössel 33 einen Federaufnahmeabschnitt zur Aufnahme der konzentrisch angeordneten Rückstellfeder 34 aufweist, die an dem Ventilgehäuse 32 oder an der Zwischenwand 20 des Aufnahmeraums 11a abgestützt ist;
• dass der von der Schreibspitze 40 betätigte Ventilverschlusskörper 33 mit einer Innenwandung 32i des Ventilgehäuses 32 einen Durchlass bildet, der abhängig von der Stellung des Ventilverschlusskörpers 33 variabel durchlässig ist;
• dass die Innenwandung 32i des Ventilgehäuses 32 konisch und/oder stufig ausgebildet ist und/oder die Außenwandung des Ventilverschlusskörpers 33 konisch und/oder stufig ausgebildet ist;
• dass der Ventilverschlusskörper als Stössel 33 ausgebildet ist, der in einem von der Schreibspitze 40 entfernten hinteren Abschnitt mit einer Mischereinrichtung 33m verbunden ist, die sich im Aufnahmeraum 11 radial, jedoch Durchbrüche aufweisend, erstreckt und mit dem Stössel 33 derart bewegungsverbunden ist, dass sie sich bei der Schiebbewegung des Stössels 33 im Aufnahmeraum 11 mitbewegt und/oder zwangsbewegt wird;
• dass die Mischereinrichtung 33m starr mit dem Stössel 33 verbunden ist;
• dass die Mischereinrichtung 33m mit dem Stössel 33 verbunden ist unter Zwischenschaltung eines Getriebes;
• dass die Mischereinrichtung 33m in Art eines Speichenrades ausgebildet ist;
• dass die Mischereinrichtung 33m in Art einer Propellereinrichtung ausgebildet ist;
• dass die Mischereinrichtung 33m als eine Durchbrüche aufweisende Scheibe ausgebildet ist;
• dass die Mischereinrichtung 33m einen Körper mit radial abstehenden Armen aufweist;
• dass die Mischereinrichtung 33m ein Gestell aufweist mit daran drehbar gelagerten Mischerelementen;
• dass die Mischereinrichtung 33m an dem Stössel 33 so gelagert ist, dass die Mischereinrichtung bei der Schiebbewegung des Stössels 33 zwangsweise eine Rotationsbewegung um die Längsachse des Stössels 33 ausführt;
• dass die Mischereinrichtung 33m mit dem Stössel 33 über einen Gewindetrieb verbunden ist;
• dass die Mischereinrichtung 33m an einem hinteren Abschnitt des Stössels 33 angeordnet ist;
• dass an einem hinteren Ende des Ventilgehäuses 32 ein Führungsloch 32f ausgebildet ist, in dem ein hinterer Abschnitt des Stössels 33 geführt ist;
• dass im Bereich des Führungslochs 32f der Ventilsitz 30s angeordnet ist und das mit dem Ventilsitz 30s zusammenwirkende Ventilverschlussglied 33v an dem hinteren Abschnitt des Stössels 33 angeordnet ist und das Ventilverschlussglied 33v mit der Mischereinrichtung 33m verbunden ist und/oder die Mischereinrichtung 33m trägt;
• dass in dem Aufnahmeraum 11 eine Zwischenwand 20 angeordnet ist, die den Aufnahmeraum 11 in einen Vorratsraum 12v und einen Arbeitsraum 11a unterteilt, und
• dass die Mischereinrichtung 33m in dem Arbeitsraum 11a angeordnet ist und/oder dass die Mischereinrichtung 33m in dem Vorratsraum 11v angeordnet ist;
• dass in der Zwischenwand 20 ein Durchgangsloch 21 ausgebildet ist, in das das hintere Ende des Stössels 33 in einer Endstellung des Stössels 33 eingreift oder das als Führungsloch 21 für den hinteren Abschnitt des Stössels 33 ausgebildet ist, und
• dass die Mischereinrichtung 33m an dem im Arbeitsraum 11a verschiebbar angeordneten Abschnitt des Stössels 33 angeordnet ist und/oder dass die Mischeinrichtung 33m an dem in den Vorratsraum 11v ragenden Ende des Stössels 33 angeordnet ist.

Further, embodiments of valve markers are also provided which have the above-described valve device specifically functioning as a metering valve or only a conventional valve device which does not function as a metering valve, but which provide the following advantageous design features individually or in combination with one another:

• that in the arranged in the region of the through hole 21 seat 23 at least one passage 20k is arranged, which takes place even with resting on the seat 23 closure and / or mixing body 22 through the passage 20k through success occurring exchange of air and / or medium between pantry 11v and working space 11a allows;
• that the closure and / or mixing body 22 cooperates with the at least one through-channel 20k in such a way that, when the closure and / or mixing body 22 resting on the seat 23, the exchange of air and / or medium is reduced;
• that the at least one passage 20k is formed as an upwardly open in the seat surface of the seat 23 groove;
• that the groove is at least partially covered by the closure and / or mixing body 22 when it rests on the seat 23;
• that a plurality of passageways 20k are distributed around the circumference of the seat 23 around the through hole 21;
• that the seat 23 is formed on an outer surface of a substantially annular body inserted in the through hole 21 and that the at least one passageway 20k is formed in this body;
• that the seat 23 has a substantially conical and / or stepped seat surface and the at least one through-channel 20k and the through-channels 20k in the seat surface are directed radially to the through-hole 21;
• that the valve closure body 33 is formed as a ram;
• in that the plunger 33 with its end 33f remote from the valve seat 23 engages in the through-hole 21 of the intermediate wall 20 and / or extends through the through-hole 21 of the intermediate wall (20) and thereby cooperating with the closing and / or mixing body 22;
• a closure element 20fh is provided in the area of the through hole 21 formed in the intermediate wall 20, which can be moved away and / or destroyed by moving the plunger 33 before the first use of the device by the end of the plunger 33 remote from the valve seat 30s;
• that the closure element is designed as a film skin 20fh which can be pierced by the end of the tappet 33;
• the film skin 20fh is arranged on the side of the intermediate wall 20 facing the working space 11a;
• the plunger 33 has a closure portion cooperating with the valve seat 30s;
• that the plunger 33 has a guide portion 33f which engages in the guide hole 32f of the valve housing 32;
• the plunger 33 has a stopper portion cooperating with the guide hole 32f;
• that the plunger 33 has a spring receiving portion for receiving the concentrically arranged return spring 34 which is supported on the valve housing 32 or on the intermediate wall 20 of the receiving space 11;
• in that the closure body 33 actuated by the writing tip 40 forms with an inner wall 32i of the valve housing 32 a passage which is permeable in function of the position of the valve closure body 33, 33r;
• that the inner wall 32i of the valve housing 32 is conical and / or stepped and / or the outer wall of the valve closure body 33, 33r is conical and / or stepped;
• a closure element 20fh is arranged in the region of the through hole 21 formed in the intermediate wall 20, which can be moved away and / or destroyed by the end of the plunger 33 remote from the valve seat 30s by displacing the plunger 33 before the first use of the device;
• that the closure element is designed as a film skin 20fh which can be pierced by the end of the tappet 33;
• the film skin 20fh is arranged on the side of the intermediate wall 20 facing the working space 11a;
• that the through hole 21 is arranged centrally in the intermediate wall 20;
• that prior to the first start-up of the apparatus, exclusively medium is arranged in the storage space 11v, and no medium is received in the working space 11a prior to the first start-up of the appliance;
• a closure and / or mixing body 22, which is assigned to a seat 23 arranged in the through hole 21, is arranged in the storage space 11 v, and
• that formed as a ram 33 valve closure body in an end position, the through hole 21 by cross-coupling and with the closure and / or mixing body 22 is cooperatively formed;
• a seat 23 for a closure and / or mixing body 22 arranged in the receiving space 11 is formed in the intermediate wall 20 in the area of the through-hole 21, and at least one through-channel 20k is arranged in the seat 23, the seat also resting on the seat 23 and / or mixing body 22 permits a passage of air and / or medium between reservoir 11v and working space 11a through passage 20k;
• that the closure and / or mixing body 22 cooperates with the at least one through-channel 20k in such a way that, when the closure and / or mixing body 22 resting on the seat 23, the exchange of air and / or medium is reduced;
• that the at least one passage 20k is formed as an upwardly open in the seat surface of the seat 23 groove;
• that the groove is at least partially covered by the closure and / or mixing body 22 when it rests on the seat 23;
• that a plurality of passageways 20k are distributed around the circumference of the seat 23 around the through hole 21;
• that the seat 23 is formed on an outer surface of a substantially annular body inserted in the through hole 21 and that the at least one passageway 20k is formed in this body;
• that the seat 23 has a substantially conical and / or stepped seat surface and the at least one through-channel 20k and the through-channels 20k in the seat surface are directed radially to the through-hole 21;
• the plunger 33 has a closure portion 33v cooperating with the valve seat 30s;
• that the plunger 33 has a guide portion 33f, which engages in a guide hole 32f of the valve housing 32;
• the plunger 33 has a stopper portion cooperating with the guide hole 32f;
• that the plunger 33 has a spring receiving portion for receiving the concentrically arranged return spring 34 which is supported on the valve housing 32 or on the intermediate wall 20 of the receiving space 11 a;
• that the valve closure body 33 actuated by the writing tip 40 forms an opening with an inner wall 32i of the valve housing 32, which passage is permeable depending on the position of the valve closure body 33;
• that the inner wall 32i of the valve housing 32 is conical and / or stepped and / or the outer wall of the valve closure body 33 is conical and / or stepped;
• in that the valve closure body is designed as a plunger 33, which is connected in a rear section remote from the writing tip 40 to a mixing device 33m which extends radially in the receiving space 11 but has apertures and is movably connected to the plunger 33 so as to move is moved and / or moved forcibly in the sliding movement of the plunger 33 in the receiving space 11;
• that the mixing device 33m is rigidly connected to the plunger 33;
• that the mixing device 33m is connected to the plunger 33 with the interposition of a transmission;
• that the mixing device 33m is formed in the manner of a spoke wheel;
• that the mixing device 33m is formed in the manner of a propeller device;
• that the mixing device 33m is formed as a perforations having disc;
• the mixer device 33m has a body with radially projecting arms;
• the mixing device 33m has a frame with mixer elements rotatably mounted thereon;
• the mixer device 33 m is mounted on the plunger 33 in such a way that the mixer device forcibly performs a rotational movement about the longitudinal axis of the plunger 33 during the sliding movement of the plunger 33;
• that the mixing device 33m is connected to the plunger 33 via a screw drive;
• that the mixing device 33m is disposed at a rear portion of the ram 33;
• that at a rear end of the valve housing 32, a guide hole 32 f is formed, in which a rear portion of the plunger 33 is guided;
• in that the valve seat 30s is arranged in the region of the guide hole 32f and the valve closure member 33v cooperating with the valve seat 30s is arranged on the rear portion of the plunger 33 and the valve closure member 33v is connected to the mixer device 33m and / or carries the mixing device 33m;
• that in the receiving space 11 an intermediate wall 20 is arranged, which divides the receiving space 11 into a storage space 12 v and a working space 11 a, and
• that the mixing device 33m is arranged in the working space 11a and / or that the mixing device 33m is arranged in the storage space 11v;
• that in the intermediate wall 20, a through hole 21 is formed, in which engages the rear end of the plunger 33 in an end position of the plunger 33 or which is formed as a guide hole 21 for the rear portion of the plunger 33, and
• the mixing device 33m is arranged on the section of the plunger 33 displaceably arranged in the working space 11a and / or that the mixing device 33m is arranged on the end of the plunger 33 projecting into the storage space 11v.

List of reference numerals:

10

receiving housing

11

accommodation space

11 a

working space

12

shell

11v

pantry

20

partition

20k

Through-channel in the partition

20fh

Film skin before first use

21

Through Hole

22

Mixing and sealing body / ball

23

ball seat

30

valve means

30s

valve seat

31

Front valve housing

31f

lead end

31 fs

calibrated annular gap

32

Rear valve housing

32f

hole

32i

Inner wall of the rear valve housing

32s

Slots in the rear valve housing

33

Valve body / plunger

33f

rear leading end of the ram

33v

Valve closure portion

33k

conical valve closure surface

33z

cylindrical section

33r

annular dosing edge

33m

mixing device

34

Return spring

40

nib

Claims (15)

Apparatus for writing, marking and / or painting with a liquid medium,
with a receiving housing (10) having a receiving space (11) for the medium,
the receiving space (11) having an intermediate wall (20) with a through hole (21) which divides the receiving space (11) into a storage space (11v) and a working space (11a),
wherein in the storage space (11v) at least one closure and / or mixing body (22) is arranged, which cooperates with a in the region of the through hole (21) formed seat (23) and / or in the working space (11a) at least one closure and / or mixing body (22) is arranged, which cooperates with a seat (23) formed in the region of the through hole (21),
wherein in the working space (11a) a valve device (30) is arranged, which a valve housing (32) with valve seat (30s) and a via a return spring (34) acted upon valve closure body (33) movably mounted in the valve housing (32) with the valve seat (30s) cooperatively,
with a writing tip (4.0) which can be connected to the working space (11a) by the valve device (30),
characterized,
in that in the region of the through-hole (21) arranged seat (23) at least one through-channel (20k) is arranged which, even with on the seat (23) resting closure and / or mixing body (22) through the passageway (20k) through exchange of air and / or medium between the reservoir (11v) and working space (11a) allows. Apparatus according to claim 1,
characterized,
in that the closure and / or mixing body (22) cooperates with the at least one through-channel (20k) in such a way that the exchange of air and / or medium is reduced when the closure and / or mixing body (22) rests on the seat (23) , Device according to one of the preceding claims,
characterized,
in that the at least one through-channel (20k) is designed as a groove which is open at the top in the seat surface of the seat (23). Apparatus according to claim 3,
characterized,
that the groove is at least partially covered by the closure and / or mixing body (22) when it rests on the seat (23). Device according to one of the preceding claims,
characterized,
in that a plurality of passages (20k) are arranged distributed around the circumference of the seat (23) around the through hole (21). Device according to one of the preceding claims,
characterized,
that the seat (23) is formed on an outer surface of a substantially annular body, which is inserted into the through hole (21) and the at least one through-channel (20k) is formed in this body. Device according to one of the preceding claims,
characterized,
in that the seat (23) has a substantially conical and / or stepped seat surface and the at least one through-channel (20k) or the through-channels (20k) in the seat surface is directed radially to the through-hole (21). Device according to one of the preceding claims,
characterized,
that the valve closure body (33) is designed as a ram. Apparatus according to claim 8,
characterized,
in that the plunger (33) engages with its end (33f) remote from the valve seat (23) into the through hole (21) of the intermediate wall (20) and / or through the through hole (21) of the intermediate wall (20) and thereby with the closure - And / or mixing body (22) zuwammenwirkend is formed. Device according to one of claims 8 or 9,
characterized,
that formed in the region of the intermediate wall (20) through hole (21), a closure element (20fh) is provided which is removed by the from the valve seat (30s) end of the plunger (33) by moving the plunger (33) before the first use of the Device wegbewegbar and / or destructible. Apparatus according to claim 10,
characterized,
in that the closure element is designed as a film skin (20fh) which can be pierced by the end of the plunger (33). Apparatus according to claim 11,
characterized,
in that the film skin (20fh) is arranged on the side of the intermediate wall (20) facing the working space (11a). Device according to one of claims 8 to 12,
characterized,
that the plunger (33) comprises the valve seat (30s) having cooperating closure portion. Device according to one of claims 8 to 13,
characterized,
in that the plunger (33) has a guide section (33f) which engages in the guide hole (32f) of the valve housing (32). Apparatus according to claim 14,
characterized,
in that the plunger (33) has a stop section cooperating with the guide hole (32f).

Images